Indicator for shears



March 10, 1925. 1 528 797 H. c. SMITH ET AL '3 INDICATOR FOR. SHEARS Fi led May 26, 1924 2 Sheets-Sheet 1 YlllllllllllllllllIlllllllllllllllllllllI? i!lflllllllllmlllllllllllllllllllllllmiil :Illllll:

March 10, 192 1,528,797 H. C. SMITH ET AL INDICATOR-FOR SHEARS Filed May 26 1924 2 Sheets-Sheet 2 Patented Mar. 10, 1925 uni-ran I 1,528,797 PATENT HENRY GOL-LIEB SMITH arm" OLLIZE Li 30mm, or ST l Vr ARYS, e16, issieaess r o THE QUICKWORKYCOMPANY, F s'r. MARYS, OHIO.

mmcaw'oe me seems.

Appnbation filed May26,

To all whom it may concern.-

Be' it known that -we, IIENRY COLLIER SMITH and' Omen: L. Bornrn, citizens of the United States, and residents otSt. Mari s, Auglai'ze County, Ohio, have invented a: new and Improved Indicator for Shears, of which the following is a specification;

This invention relates to means for. i'n-' dicating. the direction in which a sheetof .1 metal must he swung in order to be operated upon along a predetermined line. by me'afns of machine tools, the inventionheing for the same purpose as the .indi'c'ating device shown in Patent No. 1,313,960; dated Au ust-26, 1919; and the object ofthisinyenti'oiifis to provide a simple and effective indicator; which is visible fronran'yside at the tool convenient' to the workmen.

This invention consists oi a" rotary in-' dicat'or' mounted ona vertical shaft, a pointer adapted to'be moved tofollow the predetermined line of shear, and connecting mechanism betweeirthe'pointer and in:

theater whereby the indicator will mox e with thepoi It further consists in tliedet'a'ils of con struction illustrated in the accompanying drawings and" particularly 'poii'i'ted out in the elem-1s: I p v I In the drawings, Fig; 1 is an elevati'on'of a shear equipped" with rotary cutters and with our improvedindicating in'ecl-lanism. Figs. 2 and 3 aresections on the lines 2 2 and 3+2) respectively of Fig. 1. Fig. 4 is a plan of the indicating mechanism; 5 is a section on the line 55 oi Fig. 4.

Similar reference characters refer to like parts throughout the several views, a

Rotary cutters are used tocut metal plates of any desired size alongst'raight'and curvedlines. Unlike reciprocating shears here the work is held stationary during the cutting operation, the work must'be fed to-t'h'e' rotary cutters and this is mostly done'by hand.

As the workmen Whohaiidle-theseplates are usually unable to see theli'ne on "which the plates are to be out an'd'ther'e'fore cannot know in which directions to swingers plates to cause the cutters to follow thepre determined lines, means mustbe? provided to indicate to the workmen the" direction and comparative distance the plates must be swung, no matter on which side of the machine the workmen are stationed.

1924?. Serial 116.71519071 The indicatoris' preferably mounted atthe front of firemen-me so it can be seen 1 1 0 r the front nd botli sides We preferto secure a} cylindrical bracket 1* to the front of the shear and mount a shaft 3 in the bushing & in t'hi's' bracliet 1. A cylindrical drum 5 is seeaiecme' the upper end oi this shaft which is supported-by this drum, while a pinion 6 is formed on or secured to the lower end ofthis" shaft; A guide frame" 7 and its follower plate 8 are journaled on this-sh ft; beingposaeioriar by the pinion, and sli ably support arack-bar 9 which is held" in mesh with the and screws 11.

A shaft 18 is mounted in tl'i'ebearingl-l securedto the side of the fr'aiiie1 5otthe shear; and has a crank '16 attached to its upper end. A pin 1? at the" outer end of this- 'ari'n connects to the rack-bar sof that the indicator drum will timrwith the share 13.

19 Emmettradish-51116 15, and the ea 20 and arm 21' are attached to tli'isshaft'. This arm has an upturned end 23v which is a'd jaeenfi a rest bar 24: for the hand of the operator who graspsthe end 23 of the arm The bracket- 19 also cairi'estwo bc-ar' 26t'of'therotatable and slid'ablel cy i rack har 27 whose teeth mesh with the enome the veiticz'ilshatt 12.3. This bar 271mm collar 29 secured to one end and this" collar carries an inclined pointer 30 which is. adjustable therein and slides along on the plate 31 which is being passed be tween" the rotary cutters: 32 and 33.

Tliese cutters areshown separated to re ceiy'e the plate 31". When the shear is in operation, the point of the'inclincd pointer slides on" the plate being sheared; being" 1noved 1i1ra11d out to follow the sheaf line by theoperat'or' swinging the arm 21 and turning the gear 20 andsha-lt When the pointer is moved out (to the left in" Fig! 1) thesha ft' 13 turns with it' andmovesthe rack bar 9 to the left. This carries thei'ndicatinglinefia on the drum 5 to theijl eft of the line-35' 01r-t1 ebrae1 et 1 and shows that the plateflmustbe swung to thea'ight to carry the" line of shear to the "opertiitin g' line of the rotary cutters, This is true no matter where the workmen are located, the plate always being moved to bring the D Y The lower end of the shaft ourna'led in' the bearings 18 on the bracket marks 34k and 35 into alinement, no matter how curved or how straight the line of shear may be. The collar 29 is adjustable on the bar 27 so that the pointer 30 may be correctly located with reference to the cutters.

As the pointer 30 can be adjusted in the collar 29, the distance between its point and the cutters can be varied as may be found necessary, and it may be said that for straight line cutting or for curves of large radii, this distance may be greater than when the line of shear has sharper curves. But regulation is easier when this distance is greater.

It is evident that this indicator is not limited to machines embodying rotary cutters but may be employed on different types of machine tools wherein the work is operated upon along predetermined lines.

The details of construction and the pro portions of the parts may all be changed by those skilled in the art without departing from the spirit of our invention as set forth in the following claims.

We claim 1. In combination with a machine tool adapted to operate along a predetermined line on material passing the tool, a pointer shiftable transversely of said hne, a shaft and means connecting the same to said pointer whereby the shaft is caused to rotate in proportion to the transverse movement of the pointer, a rotatable indicator, and means connected to the shaft to turn the indicator.

2. In combination with a machine tool adapted to operate along a predetermined line on material passing the tool, a pointer, a rotatable and slidable shaft to which said pointer is adjustably attached, a vertical shaft, means connecting said shafts whereby the vertical shaft rotates as the slidable shaft moves endwise, a rotatable indicator, and means connected to the vertical shaft to turn the indicator.

3. In combination with a machine tool adapted to operate on moving material, means for indicating angular displacement of the material with reference to the tool comprising a drum rotatable on a vertical axis and visible to workmen on both sides and in front of the machine tool, and manually operable means connected to the drum and embodying a pointer adapted to be moved relative to the work to follow the desired line of the operation of the tool.

a. In combination with a machine tool adapted to operate on moving material, a rotatable drum mounted on a vertical axis and adapted to turn to indicate angular displacements of the material with reference to the tool, and be visible from the front and both sides of the tool, a shaft rotatable with said drum, means to rotate the shaft, a pointer, a support therefor, and means con necting said support to said shaft whereby the pointer may be caused to move in proportion to the angular displacement of the work.

5. In combination with a machine tool comprising a pair of rotary cutters adapted to operate on metal plates along predetermined lines marked on the plates, a slidablc and rotatable shaft, a pointer carried by the shaft adapted to be moved to follow said line and be carried in and out by said shaft as said plates are displaced angularly with reference to the cutters, a rotatable indicating drum visible from the sides and front of the machine tool, a second shaft, means connecting said second shaft and drum so they will turn together, and means to connect said shafts so that as one slides in and out the other will turn and turn the drum.

6. In combination with a machine tool comprising a pair of rotary cutters adapted to operate on metal plates along predetermined lines marked on the plates, a slidable and rotatable shaft, a pointer carried by the shaft adapted to be moved to follow said line and be carried in and out by said shaft as said plates are displaced angularly with reference to the cutters, a rotatable indicating drum visible from the sides and front of the machine tool, a second shaft, means connecting said second shaft and drum so they will turn together, and means to connect said shafts so that as one slides in and out the other will turn and turn the drum, said connection embodying circumferential teeth on the slidable shaft and a pinion on said second shaft.

7. In combination with a machine tool comprising a pair of rotary cutters adapted to operate on metal plates along predetermined lines marked on the plates, a slidable and rotatable shaft, a pointer carried by the shaft adapted to be moved to follow said line and be carried in and out by said shaft as said plates are displaced angular-1y with reference to the cutters, a rotatable indicating drum visible from the sides and front of the machine tool, a second shaft, means connecting said second shaft and drum so they will turn together, means to connect said shafts so that as one slides in and out the other will turn and turn the drum, and an arm attached to said second shaft to turn it and the drum and to slide the first shaft so as to cause the pointer to follow the lines on the plates.

HENRY COLLIER SMITH. OLLIE L. BOTKIN. 

